comndr45 man that is a bummer, the doe I shot this year from what you described I hit in the exact same spot, the difference was it was a broadside shot and my spitfire opened perfectly, one blade sliced through the tip of the shoulder blade and then deflected upwards and shattered the vertabrae above the should blade, I only had about 6-7 inches of penetration, but she dropped in her tracks.
From where you hit and the angle I beleive you may be right in the path of the arrow, you probably did not get a lung, I wouldn't give up on him yet though, good luck, I hope either you find him or you see him later in a recovery mode.
The Tazman aka Martin Price
Founder and President of
Virginia Disabled Outdoorsmen Club